W91031 데이터 시트보기 (PDF) - Winbond

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W91031

CALLING LINE IDENTIFIER

Winbond 

Preliminary W91031

Tip/Ring

1st Ring

Ch. seizure Mark

Message

A

B

C

D

E

F

INTN

(M-mode

or C-mode)

...

...

RNGON

2nd Ring

SLEEP

Note 1

Note 3 Note 4

FSKE

Note 2

DET

(C-mode)

FCDN

FDRN

...

...

DCLK

DATA

...101010...

Data

Note 5

Figure 9-3. Input and Output Timing of Bellcore On-hook Data Transmission

A = 2 sec typical

B = 250−500 mS

C = 250 mS

D = 150 mS

E = Depends on data length

MAX C + D + E = 2.9 to 3.7 sec

F ≥ 200 mS

Notes :

1. The CPE designer may choose to wake up the W91031 only after the end of the RNGON signal to conserve power for

a battery operated CPE. The delay from RNGON to SLEEP (and FSKE) is the reactive time of the microcontroller.

2. The CPE designer may choose to set FSKE to be always high while the CPE is on-hook, to ensure the FSK emodulator

does not react to other in-band noise.

3. The microcontroller places the W91031 in a sleep condition after FCDN has become inactive.

4. The W91031 may not be woken up at this ring signal after the FSK data has been processed.

5. If the W91031 has been woken up at the 2nd ring, the microcontroller times out if FCDN is not activated and then puts the

W91031 into a sleep condition.

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